DS1238AS-10

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PMICs, or power management integrated circuits, are specialized chips that cater to the power management tasks associated with the operations of electrical and electronic systems. The DS1238AS-10 is a particularly unique PMIC; it is an asynchronous resistor-programmable supervisors chip for mobile and portable applications. It features a wide operating range, low power consumption, and an external reset circuit.

The primary application of the DS1238AS-10 is in mobile and portable electronic systems, particularly those which need to conserve power during standby and sleep modes. In this context, the supervisor is used to monitor the system\'s power consumption and prevent it from entering a low-power state that would be damaging or detrimental. This is done by monitoring the system’s voltage, current, and temperature and issuing an alert or an instruction to change modes in order to avoid any damage to the system.

The device uses an internal resistor to program a precise trip voltage, which can be set to any value within the range of 1.2V to 6V. This feature allows the user to customize the trip voltage as per their application requirements and take the appropriate corrective action when the threshold is breached. The DS1238AS-10 also includes an active-low open-drain reset pin, which can be used to force the system into a safe operating state, and a low-power sleep mode that reduces current consumption to a minimum.

The working principle of the DS1238AS-10 revolves around its digital comparator, which is designed to constantly monitor the system’s power levels. When the comparator senses a breach of the programmed trip voltage, it triggers the reset pin, which signals the system to enter a safe operating state. The integrated active-low open-drain output can also be used to initiate a protective action by signaling external devices. A sleep pin is also included, allowing the user to manually control the sleep mode of the device.

In conclusion, the DS1238AS-10 is an asynchronous resistor-programmable supervisors chip that is ideal for mobile and portable applications. Equipped with a low quiescent current, a large operating range, a power-on reset circuit, and programmable trip voltage, it is a very effective device for monitoring and controlling the power supply in small form factor systems.

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